Maggis
From Wookieepedia, the Star Wars wiki.
Maggis was a teacher in the days before the Galactic Empire. He was professor of navigation and sublight technology at the Celestial School of Spaceflight Engineering on Argus. When the Empire was established he took on a job at the Naval Academy so he could teach there. He soon found out that he didn't like teaching at the Academy and decided to help Trever Flume escape when he was trying to rescue Lune Oddo Divinian. Trevor took him down below the crust on Coruscant and Dexter Jettster helped him become one of the Erased.
